:root{--bg:#fff;--surface:#fff;--surface-2:#f7f7f8;--surface-3:#f1f1f3;--border:#ececef;--border-strong:#e0e0e5;--ink:#030213;--text:#1a1a24;--muted:#717182;--muted-2:#9a9aa7;--primary:#030213;--accent:#f5a623;--accent-2:#f59300;--accent-soft:#fff4e0;--success:#10a37f;--success-soft:#e6f6f0;--danger:#e5484d;--danger-soft:#fdeaea;--radius:14px;--radius-sm:8px;--shadow-sm:0 1px 2px rgba(3,2,19,.04),0 1px 3px rgba(3,2,19,.06);--shadow-md:0 4px 16px rgba(3,2,19,.08);--shadow-lg:0 12px 40px rgba(3,2,19,.12);--maxw:1120px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3,h4{color:var(--ink);font-weight:700;letter-spacing:-.01em}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.muted{color:var(--muted)}.center{text-align:center}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:40;background:hsla(0,0%,100%,.85);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;height:66px;gap:8px}.brand,.nav-inner{align-items:center}.brand{display:inline-flex;gap:10px;margin-right:32px;font-weight:700;font-size:18px;color:var(--ink)}.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700}.nav-links{display:flex;gap:26px;font-size:15px;color:var(--muted)}.nav-links a{position:relative;padding:4px 0;transition:color .15s}.nav-links a:hover{color:var(--ink)}.nav-links a.active{color:var(--ink);font-weight:500}.nav-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--ink);border-radius:2px}.nav-spacer{flex:1 1}.nav-actions{display:flex;gap:10px}.btn,.nav-actions{align-items:center}.btn{display:inline-flex;justify-content:center;gap:7px;padding:10px 18px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:#fff;color:var(--ink);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s ease;white-space:nowrap}.btn:hover{background:var(--surface-2)}.btn-primary{background:var(--ink);border-color:var(--ink);color:#fff}.btn-primary:hover{background:#1a1830}.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn-accent:hover{background:var(--accent-2)}.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn-ghost:hover{background:var(--surface-2);color:var(--ink)}.btn-outline{background:#fff;border-color:var(--border-strong)}.btn-lg{padding:13px 24px;font-size:15px}.btn-sm{padding:7px 14px;font-size:13px}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.badge{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:500;padding:3px 10px;border-radius:999px;background:var(--surface-3);color:var(--muted)}.badge-live{background:var(--success-soft);color:var(--success)}.badge-soon{background:var(--accent-soft);color:var(--accent-2)}.badge-ink{background:var(--ink);color:#fff}.chip{display:inline-block;font-size:12px;padding:3px 10px;border-radius:6px;background:var(--surface-3);color:var(--muted);margin:0 6px 6px 0}.section{padding:56px 0}.section-tight{padding:36px 0}.eyebrow{display:inline-block;font-size:13px;font-weight:500;padding:4px 12px;border-radius:999px;background:var(--surface-3);color:var(--muted);margin-bottom:14px}.section-head{text-align:center;margin-bottom:36px}.section-head h2{font-size:30px;margin:0 0 10px}.section-head p{color:var(--muted);margin:0;font-size:16px}.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:24px;gap:24px}.grid-2{grid-template-columns:repeat(2,1fr)}.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}a.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.card-cover{position:relative;aspect-ratio:16/10;width:100%;background:var(--surface-3);overflow:hidden}.card-cover img{width:100%;height:100%;object-fit:cover;display:block}.card-cover .badge{position:absolute;top:12px;left:12px}.card-cover .badge-corner-right{left:auto;right:12px}.card-lock{position:absolute;inset:0;display:grid;place-items:center;color:#fff;background:rgba(3,2,19,.35);font-size:26px}.card-body{padding:18px;display:flex;flex-direction:column;flex:1 1}.card-title{font-weight:600;font-size:17px;color:var(--ink);margin:0 0 8px;line-height:1.4}.card-sub{color:var(--muted);font-size:14px;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-meta{display:flex;align-items:center;gap:14px;color:var(--muted-2);font-size:13px;margin-top:auto;padding-top:12px}.card-foot{margin-top:14px}.hero{position:relative;overflow:hidden}.hero-slide{display:grid;grid-template-columns:1fr 1fr;align-items:center;grid-gap:40px;gap:40px;min-height:460px;padding:40px 0}.hero-copy .eyebrow{background:var(--accent-soft);color:var(--accent-2)}.hero-copy h1{font-size:44px;line-height:1.2;margin:6px 0 8px}.hero-copy .lead{font-size:19px;color:var(--text);margin:0 0 12px;font-weight:500}.hero-copy p{color:var(--muted);font-size:16px;max-width:520px;margin:0 0 28px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}.hero-art{display:grid;place-items:center}.hero-art img{max-width:100%;max-height:420px;border-radius:12px;box-shadow:var(--shadow-lg)}.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:999px;border:1px solid var(--border-strong);background:hsla(0,0%,100%,.9);display:grid;place-items:center;cursor:pointer;color:var(--muted);z-index:2}.hero-arrow:hover{color:var(--ink);box-shadow:var(--shadow-sm)}.hero-arrow.left{left:8px}.hero-arrow.right{right:8px}.hero-dots{display:flex;justify-content:center;gap:8px;padding-bottom:24px}.hero-dots button{width:24px;height:6px;border-radius:999px;border:none;background:var(--border-strong);cursor:pointer;padding:0;transition:background .15s}.band-dark,.hero-dots button.active{background:var(--ink)}.band-dark{color:#e7e7ef}.band-dark h2,.band-dark h3{color:#fff}.band-dark .muted{color:#a3a3b5}.band-dark .chip{background:hsla(0,0%,100%,.1);color:#cfcfe0}.band-inner{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:40px;gap:40px;align-items:center;padding:64px 0}.band-inner .btn-outline{background:transparent;border-color:hsla(0,0%,100%,.4);color:#fff}.band-inner .btn-outline:hover{background:hsla(0,0%,100%,.1)}.auth-page{min-height:calc(100vh - 66px);display:grid;place-items:start center;padding:72px 24px}.auth-card{width:100%;max-width:420px}.auth-head{text-align:center;margin-bottom:26px}.auth-icon{width:52px;height:52px;border-radius:14px;background:var(--ink);color:#fff;display:grid;place-items:center;margin:0 auto 16px;font-size:22px}.auth-head h1{font-size:26px;margin:0 0 6px}.auth-head p{color:var(--muted);font-size:14px;margin:0}.panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:26px}.field{margin-bottom:16px}.field-label-row{display:flex;justify-content:space-between;align-items:baseline}.field label{display:block;font-size:14px;color:var(--ink);font-weight:500;margin-bottom:7px}.input{width:100%;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface-2);color:var(--text);font-size:15px;font-family:inherit;transition:border-color .15s,background .15s}.input:focus{outline:none;border-color:var(--ink);background:#fff}.input-wrap{position:relative}.input-wrap .toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);cursor:pointer;color:var(--muted);font-size:15px;background:none;border:none}.input-row{display:flex;gap:10px}.input-row .btn{flex-shrink:0}.seg{display:flex;background:var(--surface-3);border-radius:var(--radius-sm);padding:4px;margin-bottom:22px}.seg button{flex:1 1;padding:8px;border-radius:6px;border:none;background:transparent;color:var(--muted);font-size:14px;font-family:inherit;cursor:pointer;font-weight:500}.seg button.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}.msg{padding:10px 13px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px}.msg-error{background:var(--danger-soft);color:var(--danger)}.msg-ok{background:var(--success-soft);color:var(--success)}.link{color:var(--ink);font-weight:500;cursor:pointer}.link:hover{text-decoration:underline}.link-muted{color:var(--muted);cursor:pointer}.form-foot{margin-top:18px}.back-home,.form-foot{text-align:center;font-size:14px;color:var(--muted)}.back-home{margin-top:20px}.gate{min-height:56vh;display:grid;place-items:center;text-align:center}.gate-icon{font-size:40px;color:var(--muted);margin-bottom:14px}.gate p{color:var(--muted);margin:0 0 18px}.gate-actions{display:flex;gap:12px;justify-content:center}.modal-overlay{position:fixed;inset:0;background:rgba(3,2,19,.5);display:grid;place-items:center;z-index:60;padding:20px}.modal{width:100%;max-width:420px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:26px}.modal-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}.modal-head h3{font-size:20px;margin:0}.modal-close{background:none;border:none;font-size:20px;color:var(--muted);cursor:pointer;line-height:1}.modal .sub{color:var(--muted);font-size:14px;margin:0 0 20px}.detail-hero{display:grid;grid-template-columns:420px 1fr;grid-gap:36px;gap:36px;align-items:start}.detail-cover{width:100%;border-radius:var(--radius);border:1px solid var(--border);aspect-ratio:16/10;object-fit:cover;box-shadow:var(--shadow-sm)}.detail-hero h1{font-size:30px;margin:10px 0 8px}.detail-cta{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}.outline{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.outline .ch{padding:12px 18px;background:var(--surface-2);font-size:14px;font-weight:600;color:var(--ink);border-top:1px solid var(--border)}.outline .ch:first-child{border-top:none}.outline .v{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:13px 18px;border-top:1px solid var(--border);font-size:15px;cursor:pointer}.outline .v:hover{background:var(--surface-2)}.outline .v.locked{color:var(--muted-2);cursor:not-allowed}.outline .v .v-right{font-size:13px;color:var(--muted)}.learn{display:grid;grid-template-columns:1fr 340px;grid-gap:24px;gap:24px;padding:28px 0}.player{background:#000;border-radius:var(--radius);aspect-ratio:16/9;width:100%;display:grid;place-items:center;color:#999;overflow:hidden}.player video{width:100%;height:100%}.playlist{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;max-height:72vh;overflow-y:auto}.playlist .ch{padding:11px 16px;background:var(--surface-2);font-size:13px;font-weight:600;color:var(--ink)}.playlist .v{padding:12px 16px;border-top:1px solid var(--border);cursor:pointer;font-size:14px;display:flex;justify-content:space-between;gap:8px}.playlist .v:hover{background:var(--surface-2)}.playlist .v.active{background:var(--accent-soft);color:var(--accent-2);font-weight:500}.playlist .v.locked{color:var(--muted-2);cursor:not-allowed}.about-hero{display:grid;grid-template-columns:320px 1fr;grid-gap:44px;gap:44px;align-items:start}.about-photo{width:100%;border-radius:var(--radius);aspect-ratio:1;object-fit:cover;box-shadow:var(--shadow-sm)}.about-hero h1{font-size:32px;margin:10px 0 4px}.about-role{color:var(--muted);font-size:15px;margin:0 0 20px}.about-bio p{margin:0 0 14px;color:var(--text)}.stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:14px;gap:14px;margin-top:26px}.stat{border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-align:center}.stat .num{font-size:24px;font-weight:700;color:var(--ink)}.stat .label{font-size:13px;color:var(--muted);margin-top:4px}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.tag-cloud .chip{margin:0;padding:8px 16px;font-size:14px;border:1px solid var(--border);background:#fff;color:var(--text)}.book-hero{display:grid;grid-template-columns:360px 1fr;grid-gap:44px;gap:44px;align-items:start}.book-cover{width:100%;border-radius:10px;box-shadow:var(--shadow-lg)}.book-hero h1{font-size:30px;margin:10px 0 4px}.stars{color:var(--accent);letter-spacing:2px}.pub-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:14px;gap:14px;margin:20px 0}.pub-grid .stat{padding:14px}.pub-grid .num{font-size:16px}.toc-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}.toc-item{display:flex;gap:14px;align-items:center;padding:16px 18px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2)}.toc-item .n{color:var(--muted-2);font-weight:700;font-size:14px}.review{border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}.review .who{font-weight:600;color:var(--ink)}.review .role{font-size:13px;color:var(--muted);margin-bottom:10px}.agent-hero{text-align:center;max-width:640px;margin:0 auto}.agent-icon{width:64px;height:64px;border-radius:18px;background:var(--surface-3);display:grid;place-items:center;font-size:30px;margin:0 auto 18px;position:relative}.agent-icon .spark{position:absolute;top:-6px;right:-6px;width:22px;height:22px;border-radius:999px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:12px}.agent-hero h1{font-size:32px;margin:0 0 8px}.agent-card{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-align:left}.agent-card .ic{width:40px;height:40px;border-radius:10px;background:var(--surface-3);display:grid;place-items:center;font-size:18px;flex-shrink:0}.notice{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;color:var(--muted);font-size:14px;display:flex;gap:10px;align-items:flex-start}.prose{color:var(--text);font-size:16px;line-height:1.8}.prose img{max-width:100%;border-radius:10px}.prose h2,.prose h3{margin-top:1.4em}.footer{border-top:1px solid var(--border);background:var(--surface-2);margin-top:60px}.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;grid-gap:40px;gap:40px;padding:48px 0 32px}.footer-brand .desc{color:var(--muted);font-size:14px;max-width:340px;margin:14px 0}.footer-brand .icp{color:var(--muted-2);font-size:13px}.footer-col h4{font-size:14px;margin:0 0 14px;color:var(--ink)}.footer-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px}.footer-col a:hover{color:var(--ink)}.footer-bottom{border-top:1px solid var(--border);padding:20px 0;display:flex;justify-content:space-between;color:var(--muted);font-size:13px;flex-wrap:wrap;gap:10px}@media (max-width:900px){.grid,.grid-2{grid-template-columns:1fr}.nav-links{display:none}.about-hero,.band-inner,.book-hero,.detail-hero,.hero-slide,.learn{grid-template-columns:1fr}.hero-copy h1{font-size:32px}.pub-grid,.stats,.toc-grid{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1fr;gap:28px}}